Shimano Junction Di2 (A) SM-EW90-B Master Lock Battery:36V 10Ah Downtube Battery

Battery:36V 10Ah Downtube Battery

The screw-on endcaps are integrated in the design and prevent the grips from slipping

Advanced optics provide consistent beam pattern for optimal illumination

Best of all

GITevo chamois with gel core that absorbs shock steadily and gradually for comfort on long rides

Shimano Junction Di2 (A) SM-EW90-B Master Lock Battery:36V 10Ah Downtube BatteryDescription SHIMANO's SM EW90 B 5 port Junction A mounts neatly to the bike stem and connects with E TUBE wires from DI2 shifters, accessory shifters, and the downtube junction wire. The SM EW90 junction box features an integrated battery level indicator, charging port, and gear index setup switch. MODEL NO SM EW90 B SERIES DURA ACE 9070 Series Average weight 13 Type External type Position Under stem Compatible system E TUBE Compatible electric wire